Musical Fidelity M8x Vinyl

Beskrivning

The M8x Vinyl is a high-end fully balanced and discrete phono preamp.

M8x Vinyl – Overview
The M8x Vinyl is the new flagship phono preamplifier in the acclaimed Musical Fidelity M-range. Compared to its smaller brother, the M6x Vinyl, the M8 goes a step further in almost all aspects.

What is new?
* Fully balanced & fully discrete: The M6x Vinyl was already fully discrete, but not fully balanced. In the M8x Vinyl, each channel’s + and – signal get their own amplifier stage. This means there are more than twice as many discrete components that make up the phono stage and the PCB is almost 3x the size as before!
* Improved gain stage design: the gain stage now consists of 3 stages, which are able to provide more gain than before and operate at lower noise and distortion!
* More gain options: 40, 43, 46, 49, 60, 63, 66, 69dB
* New discrete input power filtering and DC blocking circuitry: Like the phono stage, also the power PCB is now 3x as big. It provides clean power to the fully balanced phono stage that is now twice as demanding!
* The Super Silent Power Transformer is now encapsulated to further protect the very sensitive phono stage from external electro-magnetical radiation.
* DECCA & COLUMBIA in addition to the standard RIAA EQ
* Dual split-passive EQ stage
* Two-step subsonic filter
* More inputs and more load settings for ultra-precise cartridge tuning.

With beautifully designed and executed massive full-aluminium casework, the M8x Vinyl has the iconic M8 heroic build quality. Using the same size potentiometers, it achieves an esthetically mighty look, and is a perfect match to the acclaimed M8 amplifier series.

In Musical Fidelity tradition, it’s designed in such a way to ensure you cannot overload the input stage or encounter any practical limitations in the output driving capacity. Its purpose is singular, to be a conduit for music. It exists to faithfully convey the artist‘s intent, their emotions, the passion directly to your ears and heart.

Technical Talk
Compared to its M6 counterpart, the M8x Vinyl now features fully balanced audio circuitry on the inside. This means there are twice as many discrete components on the inside, as each channel’s + and – signals get their own phono stage consisting of three gain stages powered by fully Class A discrete transistor circuitry.

The EQ stage doesn’t cut any corners either. Completely passive and in two separate stages (split-passive) – this is more costly to design and implement but ensures the most accurate representation of the ideal EQ curve. Split passive equalization allows for better impedance matching and lower deviation from the ideal EQ. In addition to the standard RIAA curve, we have implemented the two less common DECCA and COLUMBIA curves as well. The clean PCB layout and purpose driven design guarantee lowest possible noise and distortion with low output impedance.

RCA and XLR outputs both have their own individual stages allowing you to use them simultaneously.

Discrete Power
The M8x Vinyl displays our continued development of our Super Silent Power Transformers. Industrial grade power sockets with EMI filter and DC blocker stop interferences and eliminate transformer hum. The encapsulated toroidal transformer is purpose designed for delicate phono signals with low core saturation and extremely low electromagnetic radiation.Each discrete amp stage has a DC servo ensuring optimal DC mode. The preamplifier is powered by two high-quality symmetrical low-noise power supplies, one for each channel – all passively filtered and regulated. If we are working with the few hundreds of microvolts from a phono cartridge, everything is playing its role; every decibel of signal to noise ratio is crucially important.

Fully Balanced
A fully balanced design principle, as used in the M8x Vinyl, consists of a hot and a cold (also called + and -) signal. Both the + and – signal chains effectively carry the same musical information. A true balanced amplifier can now extract the final musical information out the +/- signals and subtract, remove, all noise that could potentially be added along the transmission. A “pseudo-balanced” amplifier will not process the + and – signals independently, but add them together before they are processed. Pseudo-balanced design will not benefit from the advantages that balanced connections have to offer, like fully balanced amplifiers do. In a true, fully balanced device, the + and – sections of both the left and right channel are treated individually, which doubles the amplifier sections by 2 as a result. You need twice as much space on the circuit board, twice as many electrical components and be twice as careful with planning your circuit board layout. As a result, the M8x Vinyl excels at suppressing unwanted noise, errors and interferences and offers the best signal to noise ratio possible.

The M8x Vinyl In Brief
* Fully balanced and discrete design
* 3-part gain stage with Class A circuitry
* Split-passive RIAA, DECCA & COLUMBIA equalisation
* Two-step subsonic filter (Switchable: OFF – Mild – Standard)
* MM (40dB) & MC (60dB) capable with +3/6/9dB option
* Separate output and input stages – connect multiple inputs and ouputs simultaneously
* Super Silent Power Transformer
* Discrete input power filtering and DC blocking circuitry
* 2x RCA inputs
* 2x balanced XLR input
* 1x RCA output
* 1x balanced XLR output
* Uncompromisingly rigid mechanical construction
* Front/side/top panels from extruded aluminium profile
* No display enables excellent shielding against outer electromagnetic fields and timeless looks
* Full aluminium buttons and control wheels
* Load settings stored for each input

Specifikation:

MM Input
* Gain at XLR outputs: 40dB, 43dB, 46dB, 49dB
* Frequency response: ±0.2dB
* Input sensitivity: 5mV IN for 500mV OUT (at 40dB, 1kHz)
* Intut impedance: 47kohm
* Input capacitance: 50-400pF selectable
* THD at 1 kHz: <0.005%
* Overload margin: 32dB
* Signal to noise ratio: >102dB „A“-wt. at 40dB

MC Input
* Gain at XLR outputs: 60dB, 63dB, 66dB, 69dB
* Frequency response: ±0.2dB
* Input sensitivity: 500μV IN for 500mV OUT (at 60dB, 1kHz)
* Intut impedance: 5 ohm to 47kohm selectable
* Input capacitance: 400pF fixed
* THD at 1 kHz: <0.008%
* Overload margin: 32dB
* Signal to noise ratio: >90dB „A“-wt. at 60dB

Features
* EQ curves: RIAA, DECCA, COLUMBIA
* Subsonic filters: off, mild (IEC), standard (at 20Hz with 18dB/octave)
* In & Outputs
* Inputs: 2x RCA, 2x XLR
* 1x RCA output: unbalanced, left and right 500mV nom, 5V max
* 1x XLR output: balanced, left and right 1V nom, 10V max

Power requirement
* Mains voltages: 115/230VAC 50/60Hz (factory pre-set); 100VAC 50/60Hz (alternative)
* Consumption: 20 Watts maximum, <0.5 W in standby (orange LED ON)

General Information
* Dimensions (WxHxD): 483 x 102 x 381 mm
* Weight: 10.6 kg net / 14 kg in shipping box

Läs mer på: www.musicalfidelity.com